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OptiX RTN 910/950 Hardware Description
Confidential Information of Huawei. No Spreading Without Permission
O p t i X R T N 9 1 0 / 9 5 0 P r o d u c t O v e r v i e w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P a ge 3
O p t i X R T N 9 1 0 / 9 5 0 P r o d u c t S t r u c t u r e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P a ge 1 9
O p t i X R T N 9 1 0 / 9 5 0 P r o d u c t P r o te c t i on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P a ge 1 0 3
OptiX RTN 910/950 Hardware Description
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Objectives Upon completion of this course, you will be able to:
Describe the main characteristics of OptiX RTN 910/950
Describe the system structure, software and hardware
structure of OptiX RTN 910/950
List the types and features of the IDU
List the functions of boards in the IDU
List the functions of ODU, Hybrid coupler and antenna
Explain the protection mode of OptiX RTN 910/950
Explain the functions of AM and Hybrid Microwave
After the course, trainees should summarize the main characteristics of OptiX RTN 910/950,be clear the general structure of the system and functions of every parts. Depending on the protection schemes introduced in the course, trainees should also explain the protection modes application in the OptiX RTN 910/950 system, also the trainees should be clear the function of AM (Adaptive Modulation) and Hybrid Microwave.
The Hybrid Microwave indicates the hybrid transmission of E1 services and Ethernet services.
"AM" stands for adaptive modulation. The AM function can automatically adjust the modulation scheme according to the channel quality. The QPSK, 16QAM, 32QAM, 64QAM, 128QAM, and 256QAM can be used as the modulation scheme. The AM is used only in the hybrid microwave.
OptiX RTN 910/950 Hardware Description
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Aggregation or Regional BackboneAggregation or Regional Backbone
LTE
RTN 950
STM-1/E1RTN 910RTN 910
RTN 910RTN 910
RTN 950
LTE
E1/FE
RTN 950
RTN 910RTN 910
RTN 950
RTN 910RTN 910
The OptiX RTN 910/950 is a new generation split microwave transmission system developed by Huawei. It can provide a seamless microwave transmission solution for a mobile communication network or private network.
The OptiX RTN 910/950 provides several types of service interfaces and facilitates installation and flexible configuration. It can provide a solution that is integrated with the TDM microwave, hybrid microwave, and packet microwave according to the network requirements. It supports the smooth upgrade from the TDM microwave to the hybrid microwave, and from the hybrid microwave to the packet microwave. The solution can evolve based on the service changes that may occur due to radio mobile network evolution. Thus, this solution can meet the transmission requirements of not only 2G and 3G networks, but also LTE and 4G networks.
The TDM microwave transmission solution and the hybrid microwave transmission solution respectively that are provided by the OptiX RTN 910/950 for the mobile communication network.
OptiX RTN 910/950 Hardware Description
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From the lower to the upper, the OptiX RTN 910/950 equipment consists of in-door unit (IDU), intermediate frequency (IF) cable, out-door unit (ODU), hybrid coupler, pole, and antenna.
The hybrid coupler is optional, only necessary when two ODUs need to be connected to one antenna.
OptiX RTN 910/950 Hardware Description
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The OptiX RTN 910/950 products are available in two types: OptiX RTN 910 and OptiX RTN 950. The IDU of the OptiX RTN 910 is 1U high and supports one or two IF boards. The IDU of the OptiX RTN 950 is 2U high and supports one to six IF boards. The users can choose an appropriate type according to the actual requirements.
OptiX RTN 910/950 Hardware Description
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The ODU is round and installed behind the antenna. It enables the conversion between the IF analog signal and radio frequency (RF) signal, and amplifying the RF signal. The ODU is irrelevant to the microwave transmission capacity. An ODU of the OptiX RTN 910/950 can support the transmission capacity from 4xE1 to 1xSTM-1 in SDH/PDH microwave system, and from 10Mbps(Max. E1 is 5) to 363Mbps(Max E1 is 75) in hybrid microwave system. When one ODU is configured for an antenna, install the ODU behind the antenna directly or separately connected to the antenna through a flexible waveguide . If two ODUs are configured for an antenna, the two ODUs are connected to the antenna through a hybrid coupler.
OptiX RTN 910/950 Hardware Description
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The ODU is the outdoor unit of the OptiX RTN 910/950. It performs frequency conversion and amplification of signals.
The OptiX RTN 910/950 series products share one set of ODUs.The OptiX RTN 910 supports standard power ODU, high power ODU, and low capacity for PDH ODU.
OptiX RTN 910/950 Hardware Description
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Hybrid Coupler When two ODUs share one antenna, the ODUs must be
connected to an RF signal coupler/ splitter (hybrid
coupler). Then, the hybrid coupler is connected to the
antenna.
When two ODUs share one antenna, the ODUs must be connected to a hybrid coupler whose full name is RF signal coupler/splitter. The hybrid coupler is a part of an irregular shape with three interfaces. Two of them are ODU interfaces and one is the antenna interface. The main function of the hybrid coupler is to couple and split the RF signal.
OptiX RTN 910/950 Hardware Description
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Antenna The antenna implements the directional transmission and
reception of RF signals. The main parameters are frequency
band, diameter and antenna gain
There are two methods of mounting the ODU and the antenna: direct mounting and separate mounting. The direct mounting method is normally adopted when a small-diameter and single-polarized antenna is used. In this situation, if one ODU is configured for one antenna, the ODU is directly mounted at the back of the antenna. If two ODUs are configured for one antenna, an RF signal combiner/splitter (hereinafter referred to as a hybrid coupler) must be mounted to connect the ODUs to the antenna.
The separate mounting method is adopted when a double-polarized antenna or big-diameter and single-polarized antenna is used. In this situation, a hybrid coupler can be mounted. That is, two ODUs share one feed boom.
OptiX RTN 910/950 Hardware Description
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Equipment Characteristics (Cont.) AM Function Based on the Hybrid Microwave
256QAM
128QAM64QAM
16QAMQPSK
256QAM
ChannelCapability
E1 Services
EthernetServices
Adaptive modulation (AM) is a technology wherein the modulation mode can be adjusted automatically according to the channel quality.
In the case of the same channel spacing, the microwave service bandwidth varies according to the modulation mode. The higher the modulation efficiency, the higher the bandwidth of the transmitted services. When the channel quality is favorable (such as on days when the weather is favorable), the equipment adopts a higher modulation mode to try to transmit more user services. In this manner, the transmission efficiency and the spectrum utilization of the system are improved. When the channel quality is degraded (such as on days when the weather is stormy and foggy), the equipment adopts a lower modulation mode to transmit only the services with a higher priority within the available bandwidth and to discard the services with a lower priority. In this manner, the anti-interference capability of a link is improved and the link availability of the services with a higher priority is ensured.
When the hybrid microwave equipment adopts the AM technology, it controls service transmission based on the service bandwidth and QoS policy corresponding to the current modulation mode. The E1 services have the highest priority. By adopting the CoS technology, the equipment schedules Ethernet services of different types to the queues with different priorities. The services in the queues of different priorities are transmitted to the microwave port. When the queues of certain priorities are congested because of insufficient microwave bandwidth, the queues of these priorities discard certain or all services. When the hybrid microwave works in the lowest modulation mode, the equipment transmits only the E1 services and the Ethernet services of the high priority on the available bandwidth. When the Hybrid microwave works in any other modulation mode, all the additional bandwidth is used to transmit the Ethernet services. In this manner, the availability of the links that carry the E1 services and the Ethernet services of the high priority is ensured and the Ethernet service capacity is increased, thus providing the dynamic bandwidth.
Slide shows the service change caused by the AM. The orange part indicates the E1 services. The blue part indicates the Ethernet services. The closer to the edge of the blue part, the lower the priority of the Ethernet service. Under all channel conditions, the E1 services occupy the specific bandwidth that is permanently available. Thus, the availability of the E1 services is ensured. The bandwidth for the Ethernet services varies according to the channel conditions. When the channel is in bad conditions, the Ethernet services of the low priority are discarded.
OptiX RTN 910/950 Hardware Description
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Accesses –48 V/–60 V DC power.Provides DC power for the IDU. Provides –48 V DC power for the ODU.
Power unit
Provides the orderwire interface.Provides the synchronous/asynchronous data interface.Provides the external alarm input/output interface.
Auxiliary interface unit
Traces the clock source signal and provides various clock signals for the system.Supports input and output of one external clock signal.
Clock unit
System communications and control.System configuration and management.Collects alarms and monitors performance.Cross-connects overheads.
Control unit
Maps service signals to microwave frame signals and demapsmicrowave frame signals to service signalsPerforms conversion between microwave frame signals and IF analog signalsProvides the O&M channel between the IDU and the ODU.Supports FEC
IF unit
Processes Ethernet services and forwards packetsPacket switching unit
Provides the cross-connect function and grooms TDM services
Timeslot cross-connect unit
Accesses E1/STM-1/Ethernet signalsService interface unit
FunctionFunctional Unit
OptiX RTN 910/950 Hardware Description
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The IDU 910 is the indoor unit of the OptiX RTN 910.
The IDU 910 adopts the card plug-in design. It can implement different functions by configuring different types of boards. All the service boards support hot-swapping.
The EXT represents an extended slot, which can be inserted with various IF boards and interface boards.
Slot 1 is the TDM/Hybrid control, switching, and timing board, CSTA is the TDM/Hybrid control, switching, and timing board, and CSHA/CSHB/CSHC are Hybrid control, switching, and timing board.
OptiX RTN 910/950 Hardware Description
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There are 3 groups of the paired slots, slot 1 and slot 2, slot 3 and slot5, slot 4 and slot 6. The paired slots are used in the 1+1 FD or 1+1 SD configuration.
OptiX RTN 910/950 Hardware Description
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Valid Slot : from Slot 1 to slot 6 (OptiX RTN 950)
from Slot 3 to slot 4 (OptiX RTN 910)
Function:
Provides one IF interface
Supports the TU-based PDH microwave solution and the STM-1-
based SDH microwave solution
The IF board receives and transmits 1x IF signal. It realizes the conversion between
baseband digital signal and IF signal, it also provides -48V DC power supply and
management signal to the ODU.
The ODU is not inserted in a physical slot but has a logical slot on the NMS. The logical slot number of the ODU is the logical slot number of the IF board that is connected to the ODU plus 20.
OptiX RTN 910/950 Hardware Description
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The ODU-PWR switch is equipped with a lockup device. To turn on or turn off the switch, you need to first pull the switch lever outwards slightly. When the switch is set to "O", it indicates that the circuit is open. When the switch is set to "I", it indicates that the circuit is closed.
OptiX RTN 910/950 Hardware Description
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Valid Slot : from Slot 1 to slot 6 (OptiX RTN 950)
from Slot 3 to slot 4 (OptiX RTN 910)
Functions:
Provides one IF interface
Supports the hybrid microwave solution
Supports AM
The ODU is not inserted in a physical slot but has a logical slot on the NMS. The logical slot number of the ODU is the logical slot number of the IF board that is connected to the ODU plus 20.
OptiX RTN 910/950 Hardware Description
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The ODU-PWR switch is equipped with a lockup device. To turn on or turn off the switch, you need to first pull the switch lever outwards slightly. When the switch is set to "O", it indicates that the circuit is open. When the switch is set to "I", it indicates that the circuit is closed.
OptiX RTN 910/950 Hardware Description
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Valid Slot : from Slot 1 to slot 6 (OptiX RTN 950)
from Slot 3 to slot 4 (OptiX RTN 910)
Functions:
Provides one IF interface
Supports the hybrid microwave solution
Supports AM
Supports XPIC
The ODU is not inserted in a physical slot but has a logical slot on the NMS. The logical slot number of the ODU is the logical slot number of the IF board that is connected to the ODU plus 20.
OptiX RTN 910/950 Hardware Description
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The ODU-PWR switch is equipped with a lockup device. To turn on or turn off the switch, you need to first pull the switch lever outwards slightly. When the switch is set to "O", it indicates that the circuit is open. When the switch is set to "I", it indicates that the circuit is closed.
OptiX RTN 910/950 Hardware Description
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The channel spacing 13.75 MHz and 27.5 MHz are applied to the 18 GHz frequency band.
The channel spacings listed in the table are the minimum channel spacings supported by the product. The channel spacings larger than the values are also supported.
The SDH/PDH radio link of the OptiX RTN 950 supports all microwave modulation mode. If the SDH/PDH radio link supports the 4E1/16QAM microwave modulation mode, it cannot use the high power ODU.
The OptiX RTN 910 whose equipment is in the form of PDH microwave equipment supports the first six microwave modulation mode.
The OptiX RTN 910 whose equipment is in the form of SDH microwave equipment supports all microwave modulation mode. If the OptiX RTN 910 supports the 4E1/16QAM microwave modulation mode, it cannot use the high power ODU.
OptiX RTN 910/950 Hardware Description
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IF Board--IF Performance (Cont.) The modulation mode and capacity supported by
IFU2/IFX2
2144256QAM7
1838128QAM7
153264QAM7
122532QAM7
102016QAM7
510QPSK7
Maximum Number of E1s
in Services
Service Capacity (Mbit/s)
Modulation Mode
Channel Spacing (MHz)
The channel spacings 13.75 MHz, 27.5 MHz, and 55 MHz are applied to the 18 GHz frequency band.
The channel spacings listed in the table are the minimum channel spacings supported by the product. The channel spacings larger than the values are also supported.
E1 services need to occupy the corresponding bandwidth of the service capacity. The bandwidth remaining after the E1 service capacity is subtracted from the service capacity can be provided for Ethernet services.
The OptiX RTN 910/950 whose equipment is in the form of hybrid microwave equipment supports all microwave modulation mode. If the OptiX RTN 910 supports the 56 MHz microwave modulation mode, it must use the high power ODU.
OptiX RTN 910/950 Hardware Description
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If the radio link form is the Hybrid microwave, the maximum capacity of each channel of microwave is 363 Mbit/s when the high power ODU is used or 183 Mbit/s when the standard power ODU is used. If the XPIC technology is used, the service capacity of the microwave
channel can be doubled with same the spectrum bandwidth.
OptiX RTN 910/950 Hardware Description
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In the case of the OptiX RTN 950/910, only the ports 1-16 and 22-37 of the SP3D interface are used. Ports 1-16correspond to E1 signals 1-16 and ports 22-37 correspond to E1 signals 17-32.
OptiX RTN 910/950 Hardware Description
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The EM6T provides two GE electrical interfaces whereas the EM6F uses the SFP optical modules to provide two GE optical or electrical interfaces. The GE electrical interfaces are compatible with the FE electrical interfaces.
Ethernet Board (Cont.) Description of the indicators
When the board is being powered on or being reset, the memory self-check fails or loading the upper layer software fails. When the board is running, the logic file or upper layer software is lost.
On (red)
The software is running normallyOff
When the board is being powered on or being
reset, the BOOTROM self-check fails.
On for 100 ms (red) and off for 100 ms repeatedly
The upper layer software is being initializedOn (green)PROG
Indicator Status Meaning
On for 100 ms (green) and off for 100 ms repeatedly
When the board is being powered on or being reset, the software is being loaded to the flash memory
On for 300 ms (green) and off for 300 ms repeatedly
When the board is being powered on or being reset, the board software is in BIOS boot state
OptiX RTN 910/950 Hardware Description
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System Control, Switching, and Timing Board (IDU 910) Description of the indicators (CSTA)
When the board is being powered on or being reset, the memory self-check fails or loading the upper layer software fails. When the board is running, the logic file or upper layer software is lost. The pluggable storage card is faulty
On (red)
The software is running normallyOff
When the board is being powered on or being
reset, the BOOTROM self-check fails.
On for 100 ms (red) and off for 100 ms repeatedly
The upper layer software is being initializedOn (green)
PROG
Indicator Status Meaning
On for 100 ms (green) and off for 100 ms repeatedly
When the board is being powered on or being reset, the software is being loaded to the flash memory
On for 300 ms (green) and off for 300 ms repeatedly
When the board is being powered on or being reset, the board software is in BIOS boot state
OptiX RTN 910/950 Hardware Description
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System Control, Switching, and Timing Board (IDU 910) Front Panel of CSHA
6. E1 (1-16) interface5. GE service interfaces 4. FE service interfaces
3. Auxiliary interfaces
and management
interfaces
2. Buttons1. Indicators
The CSHA/CSHB/CSHC is the integrated Hybrid system control and communication, switching, and clock board. The differences between the CSHA, CSHB, and CSHC are with regard to the types and number of service interfaces.
Auxiliary Interfaces and Management Interfaces
OptiX RTN 910/950 Hardware Description
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System Control, Switching, and Timing Board (IDU 910) Description of the indicators on the CSHA/CSHB
When the board is being powered on or being reset, the memory self-check fails or loading the upper layer software fails. When the board is running, the logic file or upper layer software is lost. The pluggable storage card is faulty
On (red)
The software is running normallyOff
When the board is being powered on or being
reset, the BOOTROM self-check fails.
On for 100 ms (red) and off for 100 ms repeatedly
The upper layer software is being initializedOn (green)
PROG
Indicator Status Meaning
On for 100 ms (green) and off for 100 ms repeatedly
When the board is being powered on or being reset, the software is being loaded to the flash memory
On for 300 ms (green) and off for 300 ms repeatedly
When the board is being powered on or being reset, the board software is in BIOS boot state
OptiX RTN 910/950 Hardware Description
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System Control, Switching, and Timing Board (IDU 910) Description of the indicators on the CSHC
When the board is being powered on or being reset, the memory self-check fails or loading the upper layer software fails. When the board is running, the logic file or upper layer software is lost. The pluggable storage card is faulty
On (red)
The software is running normallyOff
When the board is being powered on or being
reset, the BOOTROM self-check fails.
On for 100 ms (red) and off for 100 ms repeatedly
The upper layer software is being initializedOn (green)
PROG
Indicator Status Meaning
On for 100 ms (green) and off for 100 ms repeatedly
When the board is being powered on or being reset, the software is being loaded to the flash memory
On for 300 ms (green) and off for 300 ms repeatedly
When the board is being powered on or being reset, the board software is in BIOS boot state
OptiX RTN 910/950 Hardware Description
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System Control, Switching, and Timing Board (IDU950) CST is TDM control, switching, and timing board, only
can be installed in slot 7&8 of IDU 950
Provides full timeslot cross-connections for VC-12/VC-3/VC-4
services equivalent to 32x32 VC-4s
Performs system communication and control
Provides the clock processing function and supports one
external clock input/output function
Provides one Ethernet NM interface, one NM serial interface,
and one NE cascading interface
All the auxiliary Interfaces (orderwire, clock inputting, external alarm interfaces etc.) are integrated on the system control, switching and timing board in IDU 910.But there is a independent AUX board that provides auxiliary Interfaces in IDU 950.
OptiX RTN 910/950 Hardware Description
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System Control, Switching, and Timing Board (IDU950) Description of the indicators on the CST/CSH
When the board is being powered on or being reset, the memory self-check fails or loading the upper layer software fails. When the board is running, the logic file or upper layer software is lost. The pluggable storage card is faulty
On (red)
The software is running normallyOff
When the board is being powered on or being
reset, the BOOTROM self-check fails.
On for 100 ms (red) and off for 100 ms repeatedly
The upper layer software is being initializedOn (green)
PROG
Indicator Status Meaning
On for 100 ms (green) and off for 100 ms repeatedly
When the board is being powered on or being reset, the software is being loaded to the flash memory
On for 300 ms (green) and off for 300 ms repeatedly
When the board is being powered on or being reset, the board software is in BIOS boot state
OptiX RTN 910/950 Hardware Description
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PIU PIUSlot 13: VC-4 & GE Slot 14: VC-4 & GESlot 11: VC-4 & GE Slot 12: VC-4 & GESlot 9: VC-4 & GE Slot 10: VC-4 & GE
System Control and Switching (CSHN)Slot 7: VC-4 & GE Slot 8: VC-4 & GE
System Control and Switching (CSHN)Slot 5: VC-4 & GE Slot 6: VC-4 & GESlot 3: VC-4 & GE Slot 4: VC-4 & GESlot 1: VC-4 & GE Slot 2: VC-4 & GE
5U
Most integrated microwave Nodal in industry
Page 90
Highest integration in the industry (5U, 14 RF)
Power input1+1 hot backup
Intelligent adjustment of the FAN speed
Control, switching, and timing board1+1 hot backup
1+0, 1+1 HSB/FD/SDN+0(N<=14), N+1(N<=7)
XPIC, XPIC 1+1
Now we have known much powerful functions and features of RTN980,Then we will describe the details of the equipment.
Firstly, RTN980 has the highest integrity for Nodal microwave in the industry. It supports 14 RF directions only within 5U height rack space. It means one U height can support 2.8 directions. As a comparison, the Nodal of Ericsson AMM20P supports 18 directions but it needs 10U height space, the Nodal of NEC NEO a, supports 6 directions but it needs 7U height space. RTN 980 win the highest integrity than all the other vendors.
Next, RTN 980 provides 1+1 Hot Standby function for Power input and the system control, switching and timing board. It obviously improves the system reliability.
For the service configuration and protection, RTN980 also provides the powerful features such like N+0, N+1, XPIC 1+0 and XPIC 1+1.
Meanwhile, for the purpose of energy saving, RTN980 provides the intelligent fans which can automatically adjust the speed according to the environment temperature. The fans also can running separately and can be automatically to stop if unnecessary.
• Rich service interfaces (SDH interfaces, GE interface), achieve seamless connectivity with optical transmission networks ,
• TDM / Hybrid / Packet muti-mode
• 1+1 redundancy.
NMS EXT CLK MON
2*STM-1/4 2*GE, SFP / RJ45
STM-1
STM-4
GE
TDMCross-connect
Packetswitchin
g
PWE3
L2 Process
As a high-end nodal microwave platform, RTN980 includes much more powerfulfunctional boards. Firstly let’s see the CHSN board. CSHN is highly integrated of 4 types functions, system control, switching, timing and services accessing.
For system control, it supports all the service configuration and alarm performance management. It can work in TDM/Hybrid/Packet at same time.
For Switching, it provides large capacity of 22Gbps packet switching, and 128*128 VC4 TDM cross-connection.
For clock feature, CSHN board manages the entire RTN980 clock functions.
For services accessing, it provides various interfaces for STM-1, STM-4 and GE services.
Certainly, CSHN board can supports 1+1 redundant backup for high reliability.
• Multi-mode on air interface: 1/2*STM-1 Native E1 + PWE3/Native Eth 1*STM-1 + PWE3/Native Eth MPLS tunnel (pure packet)
• Hitless AM
• E1 Priority• Bandwidth Accelerator:Ethernet throughput can
increase 40% maximum
VCx
GE
TDMCross-connect
Packetswitchin
g
PWE3
L2 Process
ISX2: TDM/Hybrid/Packet modem card with XPIC
ISU2: TDM/Hybrid/Packet modem card
And then we will introduce the strongest IF board ISU2 and ISX2. They both are integrated Hybrid/Packet boards, and the difference just is: ISX2 can support XPIC function but ISU2 can not.
ISU2 and ISX2 has 3 advantages, one is they support multi air interface mode that transmitting at same time, such like STM-1, Native E1, PWE3 and Native ETH.
The 2nd advantage is, ISU2 and ISX2 support 6 grades hitless AM from QPSK to 256QAM, and it can set E1 services' priority to flexibly transmit hybrid services. The 3rd
is ISU2 and ISX2 provide advanced Ethernet header compression function, it will exactly increase the throughput for maximum 40%.
• Multi-mode on air interface: Native E1 + PWE3/Native Eth
MPLS tunnel
• Hitless AM• E1 Priority
IFX2: TDM/Hybrid/Packet modem card with XPIC
IFU2: TDM/Hybrid/Packet modem card
We may know that in RTN910 and RTN950, Huawei has developed the classic Hybrid and packet in 1 boards, IFU2 and IFX2, which with XPIC function in IFX2. Now the two IF boards are perfectly succeeded by RTN980 as well. They support multi air interface mode that transmitting at same time, such like STM-1, Native E1, PWE3 and Native ETH. And the 6 grades hitless AM from QPSK to 256QAM, E1 services' priority setting are also available.
• CES(2*16 E1) CESoPSN, SAToP CES ACR Fractional CES
GE16 * Smart E1
16 * Smart E1
• Super capability: support 448 Smart E1 interfaces in one box,can meet the requirement for E1 access of hub nodes ,and save slots .
Here is another important boards in RTN980, MD1 and ML1 for 32 or 16 Smart E1 accessing. A single RTN980 can support up to 448 smart E1 services. It is perfectly meet the great E1 services Hub Node. MD1 and ML1 board can process 3 types of E1 services, CES E1, IMA E1 and ATM E1. And they all support Fractional mode.
< 260 mm X 260 mm X 92 mm (width X height X depth)Dimension:
By the types of the antenna interface on ODU, ODU can be classified into waveguide interface ODU and coaxial interface ODU. Usually 7GHz to 38GHz ODU is waveguide interface and 6GHz SP serial ODU is coaxial interface.
The waveguide interface ODU can be installed by direct mount.
The typical waveguide interface ODU is 260 mm long, 260 mm wide, and 92 mm high. Its weight is not more than 5 kg and its power consumption is not more than 40 W. The following introduces the ODU interfaces. At the bottom of the ODU, there is a round interface – antenna port. The OptiX RTN 910/950 equipments are installed through direct covering. Thus, through the antenna interface, the ODU is directly connected to the antenna back or the hybrid coupler. The ODU has the grounding double-screw bolt, RSSI test interface, and an IF interface. The RSSI test interface connects to the multi-meter for testing and receiving the signal intensity. The IF interface connects to the IF cable, exchanges the IF signal and ODU management signal at on the IDU IF board, and receives the DC feed current.
RSSI is the receive signal strength interface used for testing the ODU receiving power.
OptiX RTN 910/950 Hardware Description
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In the OptiX RTN 910/950, the hybrid coupler combines and splits the RF signals, that is, combines two ODU RF signals into one RF signal in the transmission direction, and sends the signal to the antenna. In the receiving direction, the hybrid coupler splits the RF signal received by the antenna into two RF signals, and then sends the signals to the ODU. As shown in this figure, the waveguide cavity of the hybrid coupler provides three ports: antenna port (also called common port), primary tributary port and secondary tributary port. The RF signals received by the primary tributary port and secondary tributary port are integrated into one RF signal at the waveguide cavity, and the signal is output from the antenna port. The RF signal received by the antenna port is split into two FR signals at the waveguide, and then the signals are output from the two tributary ports.
OptiX RTN 910/950 Hardware Description
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In the abnormal state : active IF board or ODU is fail
IF Board
Antenna
Active
Standby
Active signal flow Standby signal flow
Switch
E1,FE,GE units
Cross-connection
In case of active IF board or active ODU failed, the standby ODU will be unmuteimmediately, and cross-connection unit will also switch to the standby IF board for receiving the signal simultaneously.
OptiX RTN 910/950 Hardware Description
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Active signal flow Standby signal flow Signal to be selected
Antenna
Main antenna
Diversityantenna
Via bus in paired slotsE1,FE,GE units
Cross-connection
Because of the multi-path fading, the 1+1 SD installing the main and standby antennas in different positions to protect the transmission microwave channel.
The active and standby IF boards must be in the paired slots.
OptiX RTN 910/950 Hardware Description
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Microwave 1+1 Space Diversity (SD) In the abnormal state: microwave signal degrade in main
antenna
Active signal flow Standby signal flow Signal to be selected
Standby
Active
IF Board ODU
ODU(mute)
IF Board
Antenna
Active
Standby
Antenna
Main antenna
Diversityantenna
Via bus in paired slots
Switch
E1,FE,GE units
Cross-connection
In case of microwave signal degrade in main antenna for the multi-fading reason, the active IF board can switch to the signal from standby IF board via the data bus between the paired slots.
OptiX RTN 910/950 Hardware Description
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Active signal flow Standby signal flow Signal to be selected
Via bus in paired slotsf1
f2
f1
f2
E1,FE,GE units
Cross-connection
The 1+1 FD uses the fading feature diversities between the signals of different frequencies in the space transmission to protect the active and standby channels in the microwave transmission..
The active and standby IF boards must be in the paired slots.
OptiX RTN 910/950 Hardware Description
Confidential Information of Huawei. No Spreading Without Permission
In the abnormal state: microwave signal degrade in main
antenna
Active signal flow Standby signal flow Signal to be selected
Standby
Active
IF Board ODU f1
ODU f2IFE2
Antenna
Active
Standby
Via bus in paired slotsf1
f2
f1
f2
Switch
E1,FE,GE units
Cross-connection
In case of microwave signal on frequency f1 is degrade for the frequency selective fading reason, the active IF board can switch to the signal from standby IF board via the data bus between the paired slots.
OptiX RTN 910/950 Hardware Description
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ERPS is applicable to ring physical networks and can provide protection for the E-LAN servicesbetween all the nodes on the ring network. Generally, when a ring network is configured withERPS, the main node blocks the ports on one side so that all the services are transmitted throughthe ports on the other side. In this manner, service loops are prevented. If a section of link failsor an NE becomes faulty, the main node unblocks its blocked port so that the services are switched from the faulty point to this port for transmission. In this manner, protection for theringnetwork is realized.
The Ethernet ring network shown in slide is configured with ERPS. Generally, the main node (NE D) blocks its port that is connected to NE A, and all the services are transmitted over the link NE A - NE B - NE C - NE D. When the link between NE A and NE B becomes faulty,NE D unblocks the blocked port so that the services can be transmitted over the link NE A - NED - NE C - NE B.
OptiX RTN 910/950 Hardware Description
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The OptiX RTN 910/950 supports only the MSTP protocol that uses the common and internal spanning tree (CIST). The MSTP that uses the CIST can be used as a rapid spanning tree protocol (RSTP). The RSTP is applicable in the case of a network loop. This protocol adopts certain algorithms to reconstruct a loop network into a loop-free tree network and thus prevents Ethernet frames from increasing and cycling in an endless manner on the loop network. In the case of the OptiX RTN 910/950, the MSTP is used to prevent a network loop on the access side.
When the user equipment accesses the OptiX RTN 950 through two different trails, you can configure the ports on the OptiX RTN 950 that are connected to the user network into a port group. This port group, together with the switch on the user network, can run the MSTP. Hence, if an service access link becomes faulty, the MSTP enables a re-configuration togenerate the spanning tree topology, thus providing protection for the user network that is configured with multiple access points.
OptiX RTN 910/950 Hardware Description
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1+1 hot backup for the power input unitPower supply
Protection CapabilityItem
When the OptiX RTN 910 whose equipment form is the SDH or PDH microwave equipment forms the ring network protection, the SNCP is used to protect SDH/PDH services.
When the OptiX RTN 910 whose equipment form is the hybrid microwave equipment forms the ring network protection, the SNCP is used to protect E1 services and the ERPS is used to protect Ethernet services.
When the OptiX RTN 910 whose equipment form is the SDH microwave equipment, and the optical transmission equipment form a hybrid ring network, the SNCP is used to protect STM-1 services on the ring network.
OptiX RTN 910/950 Hardware Description
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1+1 hot backupControl, switching, and timing board
1+1 hot backup of the internal power module
1+1 hot backup for the power input unitPower supply
Protection CapabilityItem
When the SDH/PDH radio link forms the ring network protection, the SNCP is used to protect SDH/PDH services.
When the hybrid radio link forms the ring network protection, the SNCP is used to protect E1 services and the ERPS is used to protect Ethernet services.
When the SDH radio link and the optical STM-1 path form a hybrid ring network, the SNCP is used to protect STM-1 services on the ring network.
OptiX RTN 910/950 Hardware Description
Confidential Information of Huawei. No Spreading Without Permission